In Colombia, mining engineer Rian Mitchell discovers Carrero, the lost emerald mine of the Conquistadors, but has to contend with notorious local bandit El Moro's gang and with coffee planter Catherine Knowland's love.

• Metro-Goldwyn-Mayer
• Stewart Granger
• Grace Kelly
• Paul Douglas
• John Ericson
• Murvyn Vye
• José Torvay
• Robert Tafur
• Charlita